Discuss the consequence of the increase in the concentration of major greenhouse gases in the atmosphere
Answers
Answer:
Greenhouse gas concentrations have increased rapidly, and human activities are the primary cause. The result is a worldwide, unnatural warming that's driving other changes in our environment.
The Greenhouse Effect
Sunlight passes through the atmosphere. When it strikes surfaces or gases that can absorb it, heat is emitted. You can feel the effect directly by holding your hand over dark asphalt or your car’s hood on a warm, sunny day. The surface feels hot. It is re-emitting the energy it received from the sun.
Greenhouse gases in the atmosphere behave in a similar way. They absorb heat energy rising from the Earth’s surface and re-emit some of that heat back down towards the ground. The effect is similar to how an actual greenhouse works, thus the name. Greenhouse gases act like the windows of a greenhouse, allowing light through but trapping heat inside.
Answer:
The increase in the average temperature on Earth is changing living conditions on the planet. Let's find out about the main consequences of this phenomenon:
Thawing of glacial masses
Glacial retreat also has its own consequences: reduced albedo — the percentage of solar radiation that the earth's surface reflects or returns to the atmosphere —, a global rise in sea level and the release of large methane columns are only some of them, however, they are all dramatic for the planet.
Flooding of islands and coastal cities
As stated in the fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2014), during the period 1901-2010 the global average sea level rose 19 centimetres. It is estimated that by 2100 the sea level will be between 15 and 90 centimetres higher than it is now and will threaten 92 million people.